scholarly journals Bioqualité Des Formes De Dissémination Des Protozoaires Flagellés Entériques Dans Les Eaux Souterraines (Sources Et Puits) En Zone Anthropisée (Yaoundé-Cameroun)

2016 ◽  
Vol 12 (33) ◽  
pp. 554
Author(s):  
Ajeagah Gideon Aghaindum ◽  
Asi Quiggle Atud ◽  
Nola Moïse

With an aim of characterizing the cysts of flagellated enteric protozoa present in groundwater of the town of Yaoundé, a descriptive and analytical study was carried out from February to July 2015 on the samples of 6 springs and 6 wells in 6 quarters of the city. The physico-chemical analysis proceeded at the same time on the field and at the laboratory. The observation of the cysts of the flagellated protozoa was done under the inverted microscope of mark Olympus CK2 to the objective 40X after concentration of the samples according to the method of sedimentation and the method of floating. The physicochemical analysis revealed slightly acid water (6, 04 ± 0, 49 U.C), average mineral-bearing (533, 70 ± 346, 18 µS/cm) and rich in suspended matter (14, 14 ± 11, 35 mg/L). The biological analyses revealed the presence of the cysts of the flagellated Protozoa with average densities of 162±115 cysts/L for Giardia intestinalis, 262 ± 280 cysts /L for Chilomastix mesnili, 89±101 cysts /L for Enteromonas hominis and 72 ± 80 cysts /L for Retortamonas intestinalis. In general, the greatest densities of cysts were recorded during the rainy season. The statistical tests revealed positive correlation between the cystic densities with MES, the color, turbidity and the organic matter (p < 0,05), and also negative correlation with nitrate (p < 0,05).This very high parasitological pollution makes water unfit for consumption. The use of untreated spring waters and wells could constitute a significant heath for the households living in the zone of study.

1911 ◽  
Vol 17 ◽  
pp. 132-144 ◽  
Author(s):  
F. W. Hasluck

The town of Amastra (anc. Amastris, med. Samastro), one of the most important of the ancient Greek colonies on the Euxine, and later a Genoese trading-post, lies on the neck and landward slopes of a steep peninsula forming a safe harbour on either side. The peninsula is connected by a bridge with an adjacent island, on which are a few houses still protected on the harbour side by the mediaeval town-wall. The bridge is defended on either side by a gate-tower, and the city proper and castle, which are on the peninsula, retain their lofty walls and towers, built of squared blocks evidently plundered from Roman ruins (Fig. 1). Despite this plundering and the recent construction of the new road (still unfinished in 1910) to Bartin, extensive ancient remains still survive above ground on the mainland opposite the town, notably the large Roman building of brick and opus reticulatum called the Bezestein, two columns of a temple or mausoleum, many built tombs, and considerable remains of masonry embankment and vaulting about the stream which debouches into the smaller (W.) harbour. Saving the change of ownership, the place has altered but little since Clavijo's description in 1404:—‘The town of Samastro belongs to the Genoese, and is near the sea…. on a very high hill. Opposite this hill, but more inland, there is another on which the town is built; and from one hill to another there is a great arch, like a bridge, by which people pass, and it has two gates, one at each end.


2017 ◽  
Vol 4 (3) ◽  
pp. 112-124
Author(s):  
Małgorzata Martowicz ◽  
Magdalena Kosiba

The study analyzed the shrub, from which the city of Tarnow probably derives its name. Flowers and fruits of sloes have been known for years for their medicinal properties. They are characterized by high pharmacological activity, due to the richness of biologically active compounds. Drinks, solution, and teas have long been used to alleviate many ailments. Thus, the physico-chemical analysis of blackthorn, both intenflowers (dried) and fruit (fresh and dried), was based on the content of components relevant to human health. Tarninówka tea, composed mainly of sloes, was also analyzed. The detailed objective was to examine the content of vitamin C and compare its amount in the infusion of dried sloe blossom, “compote”, in frozen fruit and “Tarninówka” tea. Additionally, in the flowers, fruits and “Tarninówka” tea also included anthocyanins, tannins and oxalates. The content of all analyzed factors is extremely important for the health of the consumer. However, anthocyanins and tannins have pro-health properties. Oxalates, however, are anti-nutrition, that is, they have a negative impact on human health. The latter was indicated in “Tarninówka” tea while checking whether the time and method of brewing tea can affect the final content of oxalate in the consumed beverage. The analyses used titrimetric methods (iodometry and Tillman’s method) as well as spectroscopic methods (UV VIS and FTIR-ATR spectroscopy).


2017 ◽  
Vol 7 (4) ◽  
pp. 668-674
Author(s):  
M. Berrayah ◽  
M. Maatoug ◽  
M. E. Azzaoui ◽  
N. Hadidja ◽  
D. T. Wendatta d’Aquin ◽  
...  

Composting is a process for the biological treatment of waste. This work consists of the valorization of the fermentable fraction of the household waste (FFOM) of the city of Tiaret by the production of enriched compost and its physicochemical characterization. In this context, 50 kg of selectively collected FFOM were composted by the Andean composting technique with mechanical turning and oxygen supply by aeration. Two enrichment treatments were applied. The first consists of the addition of ash on the waste to be compacted and the second, the addition of urea on the 25th day of the process. After two months of composting, the screening gave a mass of 2.06 kg of which, 4.12% of the initial mass. The physico-chemical analyzes concerned pH, electrical conductivity, salinity, moisture, dry matter, organic matter, mineral matter and total organic carbon. The enrichment treatments carried out also made it possible to improve the agronomic value of the compost from the category of organic amendments to that of organo-mineral fertilizers.


2018 ◽  
Vol 1 (March 2018) ◽  
Author(s):  
S.A Okanlawon ◽  
O.O Odunjo ◽  
S.A Olaniyan

This study examined Residents’ evaluation of turning transport infrastructure (road) to spaces for holding social ceremonies in the indigenous residential zone of Ogbomoso, Oyo State, Nigeria. Upon stratifying the city into the three identifiable zones, the core, otherwise known as the indigenous residential zone was isolated for study. Of the twenty (20) political wards in the two local government areas of the town, fifteen (15) wards that were located in the indigenous zone constituted the study area. Respondents were selected along one out of every three (33.3%) of the Trunk — C (local) roads being the one mostly used for the purpose in the study area. The respondents were the residents, commercial motorists, commercial motorcyclists, and celebrants. Six hundred and forty-two (642) copies of questionnaire were administered and harvested on the spot. The Mean Analysis generated from the respondents’ rating of twelve perceived hazards listed in the questionnaire were then used to determine respondents’ most highly rated perceived consequences of the practice. These were noisy environment, Blockage of drainage by waste, and Endangering the life of the sick on the way to hospital; the most highly rated reasons why the practice came into being; and level of acceptability of the practice which was found to be very unacceptable in the study area. Policy makers should therefore focus their attention on strict enforcement of the law prohibiting the practice in order to ensure more cordial relationship among the citizenry, seeing citizens’ unacceptability of the practice in the study area.


2021 ◽  
Vol 13 (8) ◽  
pp. 4096
Author(s):  
Jozefína Pokrývková ◽  
Ľuboš Jurík ◽  
Lenka Lackóová ◽  
Klaudia Halászová ◽  
Richard Hanzlík ◽  
...  

The water management of cities and villages faces many challenges. Aging infrastructure systems operate for many years after their theoretical lifetime (operation) with a very high need for reconstruction and repair. The solution is proper rainwater management. The investigated area is part of the cadastral area of the Nitra city. This article is based on the use of geographic information systems (GIS) as tools in proposing water retention measures that are needed to improve the microenvironment of the city. We proceeded in several steps, which consisted of area analysis, survey, surface runoff calculations in urbanized areas, proposal of a suitable solution for given location. For real possibilities of rainwater management procedures, a new site on the outskirts of the city was selected. In the given locality, it was possible to use water infiltration as a solution. The locality has suitable conditions of land ownership, pedological conditions, the slope of the area and also the interest of the inhabitants in the ecological solution. The outlined study indicates the need to continue research on the reliability of rainwater management practices.


2017 ◽  
Vol 72 (1) ◽  
pp. 101-111
Author(s):  
Florian Mazel

Dominique Iogna-Prat’s latest book, Cité de Dieu, cité des hommes. L’Église et l’architecture de la société, 1200–1500, follows on both intellectually and chronologically from La Maison Dieu. Une histoire monumentale de l’Église au Moyen Âge (v. 800–v. 1200). It presents an essay on the emergence of the town as a symbolic and political figure of society (the “city of man”) between 1200 and 1700, and on the effects of this development on the Church, which had held this function before 1200. This feeds into an ambitious reflection on the origins of modernity, seeking to move beyond the impasse of political philosophy—too quick to ignore the medieval centuries and the Scholastic moment—and to relativize the effacement of the institutional Church from the Renaissance on. In so doing, it rejects the binary opposition between the Church and the state, proposes a new periodization of the “transition to modernity,” and underlines the importance of spatial issues (mainly in terms of representation). This last element inscribes the book in the current of French historiography that for more than a decade has sought to reintroduce the question of space at the heart of social and political history. Iogna-Prat’s stimulating demonstration nevertheless raises some questions, notably relating to the effects of the Protestant Reformation, the increasing power of states, and the process of “secularization.” Above all, it raises the issue of how a logic of the polarization of space was articulated with one of territorialization in the practices of government and the structuring of society—two logics that were promoted by the ecclesial institution even before states themselves.


1919 ◽  
Vol 39 ◽  
pp. 110-115
Author(s):  
D. S. Robertson
Keyword(s):  
The City ◽  

In the discussion of Greek dramatic origins, a curious passage of Apuleius has never, so far as I know, been mentioned.In the second book of the Metamorphoses the hero Lucius describes a feast given at Hypata in Thessaly by his rich relative Byrrhena. After the feast Byrrhena informs him that an annual festival, coeval with the city, will be celebrated next day—a joyous ceremony, unique in the world, in honour of the god Laughter. She wishes that he could invent some humorous freak for the occasion. Lucius promises to do his best. Being very drunk, he then bids Byrrhena good-night, and departs with his slave for the house of Milo, his miserly old host. A gust blows out their torch, and they get home with difficulty, arm in arm. There they find three large and lusty persone violently battering the door. Lucius has been warned by his mistress, Milo's slave Fotis, against certain young Mohawks of the town—‘uesana factio nobilissimorum iuuenum’—who think nothing of murdering rich strangers. He at once draws his sword, and one by one stabs all three. Fotis, roused by the noise, lets him in and he quickly falls asleep.


2014 ◽  
Vol 19 (4) ◽  
pp. 387-398 ◽  
Author(s):  
Vanessa Veis Ribeiro ◽  
Carla Aparecida Cielo

Purpose Describe and correlate acoustic and auditory-perceptual vocal measures, vocal complaints and professional characteristics of a group of teachers. Methods Ninety-nine female primary school teachers, aged 20 to 66 years, underwent auditory-perceptual (CAPE-V) and acoustic (Multi-Dimensional Voice Program Advanced) vocal assessments, and answered a questionnaire with questions about personal identification, overall health, occupational activities and vocal complaints. The ANOVA and Pearson’s correlation statistical tests have been applied. Results The teachers worked 6.98 hours a day, on average, and had been working as teachers for 12.91 years, approximately. Most of them reported vocal complaints and were employed in private schools. Auditory perceptual parameters were normal. All measures of jitter, shimmer, voiceless or unvoiced and subharmonic segments were above the normal range, as well as the standard deviation for fundamental frequency and soft phonation index. Perturbation frequency and age, roughness, breathiness and overall degree of voice were positively correlated with age and length of professional practice. There was also a negative correlation between amplitude perturbation and daily use of voice. Conclusion The teachers’ voices were considered as normal by the auditory-perceptual assessment, but noise and instability were detected in the acoustic analysis; there were, particularly, vocal complaints, and alteration of vocal acoustic and auditory-perceptual measures with increasing age and length of professional practice.


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